87722432 has 28 divisors (see below), whose sum is σ = 198942960. Its totient is φ = 37595136.

The previous prime is 87722423. The next prime is 87722441. The reversal of 87722432 is 23422778.

It is an interprime number because it is at equal distance from previous prime (87722423) and next prime (87722441).

It is a tau number, because it is divible by the number of its divisors (28).

It is a junction number, because it is equal to n+sod(n) for n = 87722392 and 87722401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97457 + ... + 98352.

Almost surely, 2^87722432 is an apocalyptic number.

It is an amenable number.

87722432 is an abundant number, since it is smaller than the sum of its proper divisors (111220528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87722432 is a wasteful number, since it uses less digits than its factorization.

87722432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195828 (or 195818 counting only the distinct ones).

The product of its digits is 37632, while the sum is 35.

The square root of 87722432 is about 9366.0254110268. The cubic root of 87722432 is about 444.3278697222.

The spelling of 87722432 in words is "eighty-seven million, seven hundred twenty-two thousand, four hundred thirty-two".